Slide 1 1 A history of life, how we describe it, and a scientific look at how it came to be. Prebiosis: –Clay as catalysts? Organic molecules from comets? Spontaneous cell…

Slide 1 Lecture 3: The Origin of Species Campbell chapters: Chapter 24 Chapter 25 Speciation - the origin of new species from pre-existing species. Slide 2 What is a species?…

Slide 1 16-1 Slide 2   What are the main sources of heritable variation in a population?  How is evolution defined in genetics terms?  What determines the numbers…

Slide 1 Classification of Organisms and the Kingdoms of Living Things Chapter 14 & 19 Slide 2 Categories of Classification Taxonomy- the science of naming organisms Aristotle-…

Slide 1 Ecology and the Biosphere Chapter 52 Slide 2 Earth from the moon Slide 3 Ecology Ecology is the study of Distribution and Abundance of organisms over time. Distribution…

Ch. 3âKey concepts A biological species is defined as a group of potentially interbreeding populations that are reproductively isolated from other such groups under natural…

Pl PLANT OF THE DAY! Camellia sinensis â tea Native to East and South Asia tea consumption dates to the 10th century BC Big Questions What is speciation? What kinds of reproductive…

SPECIES AND SPECIATION Two major categories of evolutionary change: Evolutionary change within lineages over time (anagenesis). Splitting of lineages over time (cladogenesis)…

Classification of Organisms and the Kingdoms of Living Things Chapter 14 & 19 Categories of Classification Taxonomy- the science of naming organisms Aristotle- 1st ~2000…

Chapter 18 Speciation What is a Species? The morphological species concept expresses the following: Species, in its simplest interpretation means âkindâ The biological…